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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Kumar, Satish
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2024MAX Phase Ti<sub>2</sub>AlN for HfO<sub>2</sub> Memristors with Ultra‐Low Reset Current Density and Large On/Off Ratiocitations
- 2024Multi-Objective Optimization of Friction Stir Processing Tool with Composite Material Parameters
- 2023Photochemically Induced Marangoni Patterning of Polymer Bilayers
- 2023Wear performance analysis of B<sub>4</sub>C and graphene particles reinforced Al–Cu alloy based composites using Taguchi methodcitations
- 2023Evolution of flow reversal and flow heterogeneities in high elasticity wormlike micelles (WLMs) with a yield stresscitations
- 2022SURFACE EROSION PERFORMANCE OF YTTRIUM OXIDE BLENDED WC-12CO THERMALLY SPRAYED COATING FOR MILD STEELcitations
- 2022Controlling Surface Deformation and Feature Aspect Ratio in Photochemically Induced Marangoni Patterning of Polymer Filmscitations
- 2021Criteria Governing Rod Formation and Growth in Nonionic Polymer Micellescitations
- 2021Achieving Stable Patterns in Multicomponent Polymer Thin Films Using Marangoni and van der Waals Forcescitations
- 2021Study on Solid Particle Erosion of Pump Materials by Fly Ash Slurry using Taguchi’s Orthogonal Arraycitations
- 2020Self-aligned capillarity-assisted printing of high aspect ratio flexible metal conductorscitations
- 2019Dynamic wetting failure in curtain coatingcitations
- 2017Droplet wetting transitions on inclined substrates in the presence of external shear and substrate permeabilitycitations
- 2016Dynamic wetting failure and hydrodynamic assist in curtain coatingcitations
- 2015Combined thermal and electrohydrodynamic patterning of thin liquid filmscitations
- 2011Highly conducting and flexible few-walled carbon nanotube thin filmcitations
- 2010Meltblown fiberscitations
- 2010Transient growth without inertiacitations
- 2010Transient response of velocity fluctuations in inertialess channel flows of viscoelastic fluids
- 2004Instability of viscoelastic plane Couette flow past a deformable wallcitations
- 2000Shear banding and secondary flow in viscoelastic fluids between a cone and platecitations
Places of action
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article
Meltblown fibers
Abstract
<p>Both melt viscosity (η<sub>o</sub>) and elasticity (correlated here with the longest melt relaxation time λ<sub>1</sub>) were found to control the diameter distribution of meltblown fibers. Fibers were formed by melt blowing binary polystyrene (PS) blends containing widely differing component molecular weights using a custom-built laboratory apparatus. Varying the concentration and molecular weight of a high molecular weight PS provided independent control over η<sub>o</sub> and λ<sub>1</sub>. These rheological parameters influence the average diameter (d<sub>av</sub>) and the distribution of diameters (coefficient of variation, CV) of meltblown fibers in different ways. Increasing η<sub>o</sub> leads to an increase in d<sub>av</sub> but has little impact on CV. On the other hand, increasing λ<sub>1</sub> beyond a threshold value reduces CV while simultaneously increasing d<sub>av</sub>. A one-dimensional slender-jet theoretical model with both upper convected Maxwell and Phan-Thien and Tanner constitutive equations was developed to investigate the influence of viscoelasticity and processing parameters on the properties of meltblown fibers. This model predicts a strong dependence of fiber diameter on the air shear stress and variations in fiber diameter with viscoelasticity that are in qualitative agreement with the experimental results. We believe these results suggest that carefully controlling the viscoelastic profile of polymers used in melt blowing is a viable approach for producing nanofibers with narrow fiber diameter distributions using current commercial equipment.</p>